MergedDictionaries(学习)

创建Resource的时候我们一般在本Solution根目录下右键创建新的resource文件，is just a collection of any typed objects, not elements.

比如：

<LinearGradientBrush EndPoint="1,0" x:Key="brush1">
<GradientStop Color="Yellow" Offset="0" />
<GradientStop Color="Orange" Offset=".7" />
<GradientStop Color="DarkRed" Offset="1" />
</LinearGradientBrush>

其他xaml文件（MainWindow.xaml或者某个view）要使用它的时候

<Ellipse Fill="{StaticResource brush1}" />

但是之前记得在<Application.Resources>级，或者本级merge这个资源

如下Open App.xaml. inside the <Application.Resources> tag加入下面

<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Brushes.xaml" />
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

注意：

1. Merge的source要写清楚Path：

   <ResourceDictionary>
   <ResourceDictionary.MergedDictionaries>
   <ResourceDictionary Source="Brushes.xaml" />
   </ResourceDictionary.MergedDictionaries>
   </ResourceDictionary>

   if 资源在Resources文件夹下, merging that into App.xaml would look like as follows:

   <ResourceDictionary Source="Resources/Brushes.xaml" />

2. 对于在其他referenced assemblies. 要Base on pack URI syntax.比如：

   <ResourceDictionary Source="/MyClassLibrary;component/Resources/
   Brushes.xaml" />

3. 对于Duplicat的资源，排序原则。有写内部Key的先，然后是最后一个resource里定义过的笔刷，然后是倒出第二个
   

   <ResourceDictionary>
   <SolidColorBrush Color="Blue" x:Key="brush1" />
   <ResourceDictionary.MergedDictionaries>
   <ResourceDictionary Source="Resources/Brushes2.xaml" />
   <ResourceDictionary Source="Resources/Brushes.xaml" />
   </ResourceDictionary.MergedDictionaries>
   </ResourceDictionary>